Fatigue crack propagation at sharp notches

被引：0
作者：
Wurm, B [1 ]
Pham, VB [1 ]
Sahn, S [1 ]
机构：
[1] Tech Univ Dresden, Inst Festkorpermech, D-8027 Dresden, Germany
来源：
FATIGUE '99: PROCEEDINGS OF THE SEVENTH INTERNATIONAL FATIGUE CONGRESS, VOLS 1-4 | 1999年
关键词：
D O I：
暂无
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Crack propagation from different sharp notches was observed especially in low cycle fatigue tests under 4-point-bending with constant amplitudes. Cracks were measured using the replication method. Two materials with different microstructures were examined. For description the stress intensity factor for cracks from notches by Smith/Miller [2] and the crack closure formula by Newman [3] were used. Nominal stresses greater than the yield stress were corrected with an elastic-plastic assumption. The crack closure of small cracks was included in an extension with d(0)* [4]. The description with the SIF gives good results when a plasticity correction is used.
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收藏
页码：1163 / 1168
页数：6
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